Perhaps you should try some spelling variations:
information perfusion » information fusion, information diffusion, information profession
perfusion methods » fusion methods, permutation methods, regression methods
array forming » array arcing, array fermi, array formats
array sharing » array string, arrays bearing, array imaging
methods some » method some, methods soe, methods sam

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: information perfusion methods some ((((array forming) or (array format))) or (array sharing))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information perfusion methods some ((((array forming) OR (array format))) OR (array sharing)).
• Adding a wildcard symbol may retrieve word variants: information perfusion methods some ((((array forming) or (array format))) or (array sharing))*.